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Home >> Lexus >> 2023 >> NX 350 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Front Camera System - Diagnostic Codes & Circuit Tests >> Front Camera System >> DTC U0232-87: Lost Communication with Side Obstacle Detection Control Module "A" Missing Message; DTC U0241-87: Lost Communication with Headlamp Control Module "A" Missing Message; DTC U1236-87: Lost Communication with Cruise Control Front Distance Range Sensor Front Side "B" Missing Message [03/2022 - ] >> Description
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DTC U0232-87: Lost Communication with Side Obstacle Detection Control Module "A" Missing Message; DTC U0241-87: Lost Communication with Headlamp Control Module "A" Missing Message; DTC U1236-87: Lost Communication with Cruise Control Front Distance Range Sensor Front Side "B" Missing Message [03/2022 - ]: Description

Forward recognition camera is connected to the front side radar sensor (RH)*1, blind spot monitor sensor RH, and headlight ECU sub-assembly LH*2, *3 or headlight assembly LH*2, *4 by CAN communication line.

If communication with the blind spot monitor sensor RH stops, the forward recognition camera stores DTC U0232-87.

If communication with the front side radar sensor (RH) stops, the forward recognition camera stores DTC U1236-87.*1

HINT: 

When DTCs or vehicle control history (RoB) related to the front radar system is output, the forward recognition camera may output DTC U1236-87.

If communication with the headlight ECU sub-assembly LH*3 or headlight assembly LH*4 stops, the forward recognition camera stores DTC U0241-87.*2

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U0232-87 Lost Communication with Side Obstacle Detection Control Module "A" Missing Message When a communication error between forward recognition camera and blind spot monitor sensor RH is detected
  • Harness or connector
  • Blind spot monitor sensor RH
  • Front side radar sensor (RH)*1
  • Headlight ECU sub-assembly LH*2, *3
  • Headlight assembly LH*2, *4
  • Forward recognition camera
  • No. 4 CAN junction terminal
Front Recognition Camera
U0241-87 Lost Communication with Headlamp Control Module "A" Missing Message When a communication error between forward recognition camera and the headlight ECU sub-assembly LH*3 or headlight assembly LH*4 is detected
  • Harness or connector
  • Blind spot monitor sensor RH
  • Front side radar sensor (RH)*1
  • Headlight ECU sub-assembly LH*3
  • Headlight assembly LH*4
  • Forward recognition camera
  • No. 4 CAN junction terminal
Front Recognition Camera
U1236-87 Lost Communication with Cruise Control Front Distance Range Sensor Front Side "B" Missing Message When a communication error between forward recognition camera and front side radar sensor (RH) is detected
  • Harness or connector
  • Blind spot monitor sensor RH
  • Front side radar sensor (RH)
  • Headlight ECU sub-assembly LH*2, *3
  • Headlight assembly LH*2, *4
  • Forward recognition camera
  • No. 4 CAN junction terminal
Front Recognition Camera
  1. *1: w/ Front Cross Traffic Alert
  2. *2: w/ Automatic Headlight Beam Level Control System
  3. *3: except TMMC Made
  4. *4: for TMMC Made

HINT: 

If the DTCs are output simultaneously, the inspection area can be narrowed down.

Pattern DTC output part name
(Display on GTS)
Suspected Area (Malfunction Status)
Forward Recognition Camera Headlight ECU Sub-assembly LH*3
Headlight assembly LH*4
Front Recognition Camera Headlight Control
U0232-87 U0241-87*2 U1236-87*1 U023A-87
Pattern 1 Harness or connector (Open or short)
Blind spot monitor sensor RH (Internal malfunction)
Front side radar sensor (RH) (Internal malfunction)*1
Headlight ECU sub-assembly LH (Internal malfunction)*2, *3
Headlight assembly LH (Internal malfunction)*2, *4
Forward recognition camera (Internal malfunction)
Pattern 2 - - - Harness or connector (Open)
Blind spot monitor sensor RH (Internal malfunction)
Pattern 3*2 - - Harness or connector (Open)
Headlight ECU sub-assembly LH (Internal malfunction)*3
Headlight assembly LH (Internal malfunction)*4
Pattern 4*1 - - - Harness or connector (Open)
Front side radar sensor (RH) (Internal malfunction)

◦: DTC is output

-: DTC is not output

*1: w/ Front Cross Traffic Alert

*2: w/ Automatic Headlight Beam Level Control System

*3: except TMMC Made*4: for TMMC Made